Package of 250 Base Plates, diameter 27.5mm Back Catalog number: 435035 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438030-001 Spare Net Bag for Plankton Net No. 438 030 Price on request 435094 Plunger Sampling Pipette acc. to Hensen, capacity Price on request 435011C Counting Chamber for zooplankton, dimensions 80 x Price on request